I used Kindle Comic Creator for the project. I thought there would be a learning curve and it would take me awhile to figure out how to use it, but it was very user friendly. I put my eBook together in a matter of hours. I urge anyone to use it to bring your own art into a different format and have some fun with it
Just for an easy reference the sizes I used for my Kindle eBook using Kindle Comic Creator are in pixels:
1563W X 2500H 72 dpi for the cover and 800W X 1280H 300 dpi for my interior illustrations. It seems this is the standard.
If anyone would like a copy of Puppy Playdate or would like to visit the Puppy Playdate website I set up for the book, here are some links:
Website for Puppy Playdate
http://puppy-playdate.weebly.com/
http://www.amazon.com/dp/B00WU00NVY